Which mechanism of evolution below examples are involves: Natural Selection, Genetic Drift (Founder's Effect or Bottlenect Effect), Sexual Selection, or Gene Flow.

1 - A large hurricane blows a log offshore to an island. A group of beetles that were living on the log arrive on an island and begin to interbreed with the population of beetles that were already living on the island.

2 - Cats and dogs are often given flea medications to control flea outbreaks. In one area, the flea medications are no longer working because the fleas have acquired a mutation that makes them resistant to this type of chemical.

3 - A volcanic eruption causes lava to flow down the slide of a mountain that is the habitat for a population of sloths. Being slow, the sloths are unable to outrun the approaching lava flow and die. A few sloths were in trees not burned by the lava flow and survived. These sloths are the last of their kind in this region of the rainforest.

Question

Biology

Evangeline

1 June, 05:26

Which mechanism of evolution below examples are involves: Natural Selection, Genetic Drift (Founder's Effect or Bottlenect Effect), Sexual Selection, or Gene Flow.

1 - A large hurricane blows a log offshore to an island. A group of beetles that were living on the log arrive on an island and begin to interbreed with the population of beetles that were already living on the island.

2 - Cats and dogs are often given flea medications to control flea outbreaks. In one area, the flea medications are no longer working because the fleas have acquired a mutation that makes them resistant to this type of chemical.

3 - A volcanic eruption causes lava to flow down the slide of a mountain that is the habitat for a population of sloths. Being slow, the sloths are unable to outrun the approaching lava flow and die. A few sloths were in trees not burned by the lava flow and survived. These sloths are the last of their kind in this region of the rainforest.

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Miasy · Answer 1

Your answer would be the second one because of natural selection the ones that slowly became immune/the ones that didn't die from it. Those fleas would then go to populate and breed to create a new immune population, the ones that weren't immune would slowly begin to die off.